“Core”-dictionary (“Centra”, small,
with only most useful “Basic”-words): words are marked
with “++”.

Suggestion: prefer ++, then +.

Other abbreviations:
“G” marks Glosa words with Greek origin.
“1” marks Glosa 1000 words (words, that appear in
one of the several Glosa-1000-lists).
“*” marks a word not original GEO
(Clark/Ashby).
“1*” means only a slight modification from a
Glosa-1000-word.
“X”-words should be avoided. The prefered
synonym is in brackets (=...).
and: adj adjective, n noun, v verb.